ZIP 01864 recorded 138 fire and hazmat incidents in 2025, 773 across 2021–2025. Primary county: Middlesex County, MA. FEMA NRI rates wildfire risk here as High.
773 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 171 | |
| 2022 | 88 | |
| 2023 | 161 | |
| 2024 | 215 | |
| 2025 | 138 |
Nov peaks. Sep dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 01864 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 98 | 12.7% | |
| 2 | Electrical wiring/equipment problem, other | 90 | 11.6% | |
| 3 | Carbon monoxide incident | 67 | 8.7% | |
| 4 | Unauthorized burning | 56 | 7.2% | |
| 5 | Power line down | 52 | 6.7% |
For the 8 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 01864 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 22 | 16.9% | |
| 2 | Undetermined | 21 | 16.2% | |
| 3 | Wildland, woods | 19 | 14.6% | |
| 4 | Open area - outside; included are farmland, field | 11 | 8.5% | |
| 5 | Engine area, running gear, wheel area | 10 | 7.7% | |
| 6 | Highway, parking lot, street: on or near | 9 | 6.9% | |
| 7 | Cooking area, kitchen | 6 | 4.6% | |
| 8 | Other | 5 | 3.8% | |
| 9 | All other areas | 27 | 20.8% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 60 | 46.2% | |
| 2 | Hot ember or ash | 15 | 11.5% | |
| 3 | Hot or smoldering object, other | 8 | 6.2% | |
| 4 | Arcing | 6 | 4.6% | |
| 5 | Heat from powered equipment, other | 5 | 3.8% | |
| 6 | Radiated, conducted heat from operating equipment | 5 | 3.8% | |
| 7 | Heat source: other | 4 | 3.1% | |
| 8 | Spark, ember or flame from operating equipment | 4 | 3.1% | |
| 9 | All other sources | 23 | 17.7% |
Largest single-incident losses in ZIP 01864 across 2021–2025. These 8 fires alone account for 2305% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Building fires | 2024 | Major |
| 2 | $300,000 | Building fires | 2023 | Major |
| 3 | $250,000 | Passenger vehicle fire | 2024 | Major |
| 4 | $150,000 | Building fires | 2024 | Significant |
| 5 | $100,000 | Building fires | 2021 | Significant |
| 6 | $100,000 | Road freight or transport vehicle fire | 2021 | Significant |
| 7 | $70,000 | Road freight or transport vehicle fire | 2024 | Significant |
| 8 | $40,000 | Building fires | 2023 | Significant |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 01864.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | North Reading | 768 | |
| 2 | Reading | 1 | |
| 3 | Wilmington | 1 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 773 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.